Part Number: 781742-01
The National Instruments 781742-01 PXIe-4140 is a high-performance PXI Source Measure Unit designed for precision measurement and sourcing applications. This module is equipped with four user-programmable channels, capable of sourcing and sinking currents up to ±100 mA and voltages up to ±10 V. Each channel offers exceptional measurement resolutions of 100 µV for voltage and 100 pA for current, with an accuracy of ±0.1% for both voltage and current measurements, including offset specifications depending on the current range. The PXIe-4140 features a rapid settling time of 100 µs, ensuring stable output in both sourcing and sinking modes, with a transient response capable of recovering within ±20 mV following load current changes. Designed for installation in PXI Express chassis, this module leverages the PXIe interface for high-speed data transfer and synchronized clock operations with compatible devices. It operates effectively at either a 12 V rail, drawing approximately 600 mA, or a 3.3 V rail with a current draw of 350 mA. The recommended operating temperature is between 0 °C and 55 °C, while long-term storage should occur in an environment maintained between -40 °C and 70 °C. The 781742-01 does not feature an Ingress Protection rating, thus installation within a compatible PXIe chassis is advised to shield it from environmental factors. The module supports operation at altitudes up to 2,000 meters and is rated for pollution degree 2, denoting the occurrence of only non-conductive pollution. The PXIe-4140 conforms to a standard 3U PXIe form factor with a weight of approximately 425 grams, making it a compact solution for diverse automation and measurement needs.